An EM wave radiates outwards from a dipole antenna, with \[{{E}_{0}}\] as the amplitude of its electric field vector. The electric field \[{{E}_{0}}\] which transports significant energy from the source falls off as [r = distance from dipole antenna]

• A. \[\frac{1}{{{r}^{3}}}\]
• B. \[\frac{1}{{{r}^{2}}}\]
• C. \[\frac{1}{r}\]
• D. remains constant